Paul N. Gardner Co. Inc.: This waterproof, spear-tip pH tester includes: an electrode junction 200 times larger than standard electrodes, making it virtually impossible to clog; rugged spear tip for soft solids and semisolid materials; and a long, thin electrode that can be used to determine pH in test tubes and other narrow containers. It also includes a hold function, auto-off function, self-diagnostic error messages and a three-segment battery-life indicator.
Call 800/762.2478.